This grip attatches to the magazine well of most standard M4 style airsoft rifles. It provides a more secure and ergonomic hold on the weapon for players who like to hold their rifle by the magazine well. The fluted opening at the bottom of the grip also effectively increases the size of the opening of the mag well allowing for faster, easier magazine changes. This grip is easily mounted with the two included screws. Give your gun a more tactical look and feel with this magwell grip.